A Belgian police officer stands guard outside the Grand Mosque in Brussels, Belgium, November 26, 2015. Firecrews and decontamination teams attended a major mosque in Brussels close to the European Union headquarters on Thursday after a suspect powder was found that the fire service said was feared to be anthrax. Reuters journalists saw about a dozen emergency vehicles, including police, outside the Islamic and Cultural Centre of Belgium, a large Saudi-established institution including a mosque situated 200 meters from the European Commission. REUTERS/Francois Lenoir